Roving-machine



Patented July 17, 1888.

.Ella

A. E. RHOADES.

ROVING MAGHINE.

l dus N4 FETERS, Phuwmnugmpher, wmingwn. D. c.

, tween the shafts actuating the fliers and the Nrran STATES ATENTErica.

ALONZO E. RHOADES, OF MILFORD, MASSACHUSETTS, ASSIGNOR TO THE HOPEDALEMACHINE COMPANY, OF HOPEDALE, MASSACHUSETTS.

ROVING-MACHINE.

SPECIFICATION forming part of Letters Application filed August Q3, 1587.

To all whom it may concern:

Be it known that I, ALONZO E. Raon-inns, of Milford, county ofVorcester, and State of Massachusetts, have invented an Improvement inRovingMachines, of which the following description, in connection withthe accompanying drawings, is a specification, like letters on thedrawings representing like parts.

In the production of roving on roving-niachines using iers the roving isfrequently stretched and weakened by starting or stopping the dierbefore the bobbin, this being due to what is known as backlash Inroving-machincs using a flier, the class of machine upon which thepresent invention is an improvement, the fliers are usually rotated at auniform speed, while the bobbins, when they begin to receive yarn, runat a slowerA speed, their speed being gradually increased as thebobbinsare filled; but the speed attained by the bobbins does not equalthat of the fliers. So, also, in this class of machine the iiiers aredriven from the Hier-driving shaft, whereas the bobbins are driven froma bobbindriving shaft set in motion by the dier-driving shaft andintermediate gearing, and as a result the backlash is different indegree, being perceptible most at the bobbin.

In my experiments to increase the speed of rovinglnachines I discoveredthat means must be provided to overcome this backlash and the resultantstretching of the roving or yarn between the flier and bobbin, as theier starts first; and to over come this objection and insure thestarting of the flier and bobbin together I have interposed a frictiondevice bebobbins, the said friction device, as herein shown, consistingof two plates pressed together in a yielding manner, the said platesbeing driven positively, one from the flier-actuating shaft and theother from the bobbinactuating shaft, the speed of the disks or platesof the friction device varying relatively the one to the other as thedifference in the speed of the fliers and bobbins.

My invention consists, essentially, in the combination, with the flierand bobbin actuating shafts, of an intermediate friction device andgearing to actuate the same, whereby the Said bobbin and flier actuatingshafts are al- Patent No. 386,352, dated July 17, 1888.

Serial No. 247.646. (No model.)

ways stopped and started at the same instant, as will be described.'

Figure l in front elevation shows a sufficient portion of a rovingmachine embodying my invention to enable my improvements to beunderstood. Fig. 2 is a section of Fig. l in the line x x, lookingtoward the left. Fig. 3 is an enlarged detail of the friction device andthe gearing connected therewith to the left of the 6o dotted line x 0J',Fig. l, one half of one of the plates of the friet-ion device beingbroken out to show the other half of the friction device of the samesize behind it; and Fig. 4 is a section of Fig. 3 in the dotted line x".

The frame-work A, of proper shape to sustain the working parts, has adriving-shaft, a, provided with usual fast and loose pulleys.

As herein shown, the shaft a has a pinion, a, which engages a toothedgear, a2, fast on 7o the flier-actuating shaft a, it having a suitablenumber of beveled gears, as of, which engage each a beveled gear, as a,on the tubular neck of the flier a, the said neck taking its bearing inthe rail al, while the nose ofthe iiier takes its bearing in a suitablerail, a,

The dier-driving shaft a has fast upon it one pulley, b, of a pair ofcone-pulleys, the` second cone-pulley, as b', being fast uponashortshaft, as b2, having toothed gear bi", which engagesa 8o pinion,b", fast on the bobbin-driving shaft b5, it having one or more beveledgears, as b, which engage each a beveled gear, as bl, on and adapted torotate the spindle b3, which in usual nianner drives the bobbinb, uponwhich is to be wound the yarn issuing from the presser b1 of the flier.

The belt c, passed about the cone-pulleys I) b, is shifted at the propertimes by a beltshipper, c', so as to vary as may be desired the 9orelative speeds of the two shafts a3 b5.

I do not desire to limit my invention to the eXact devices shown fordriving the iiier and bobbin actuating shafts, as instead they may bedriven by any usual devices commonly employed in roving-frames.

The particular manner of driving the said bobbin-driving shaft isimmaterial, as it may be driven from the flier-driving shaft through acompound motion, as it is called, as com- IOO monly done incotton-mills.

The flier-actuating shaft as has fast upon it a toothed gear, d, (seeFig. 3,) which engages a toothed gear, d', on a shaft, d2, he-ld withinand directly at the rear of the shaft a3, the said shaft cl2 havingsecured to ita pinion, d3, which engages the toothed periphery d* of theplate or disk d5, constituting one half of the friction device, theother half being a plate or disk, e, the contacting surfaces of the saidplates or disks being preferably beveled to lit one into the other, asbest shown in Fig. 4. y

The disk or plate d5 and its toothed surfaces d* constitute, preferably,an integral part of a hub, j", mounted loosely upon a sleeve, (Z7, inturn mounted loosely upon a stud, ds, connected to a part of theframe-work by a suitable nut, d. Aspiral spring placed upon the sleeveZ7 and controlled by a nut,` f2; screwed upon a short part of the-saidsleeve di, causes the vfriction plate or disk d5 to be pressed with moreor less force against the surface of the friction plate or disk e.

The bobbin-driving shaft b5 has fast upon it a toothed gear, e', whichin turn engages a toothed gear, et', fast upon a shaft, e3, parallelwith and directly back of the shaft b5, the said shaft e:i having fastupon it a toothed pin. ion, ewhich engages the toothed portion e5 of thedisk or plate e, (see Fig. 3,) where the disk or plate d5 is broken awayto show the disk or plate e, which is of the same diameter, behind it.The disk or plate e and its toothed portion e5 form part of a hub, e,which also runs loose on the sleeve (Z7.

As described, it will be understood thatthe disk or plate d5 is drivenpositively from the flier-actuating shaft, while the disk or plate e isdriven positively from the bobbin-actuating shaft, each disk beingdriven at `a speed corresponding with the said shafts.

rlhe disks or plates, being pressed together as described, constitute afriction device or clutch which effectually does away with all backlashreferred to, and insures not only tervention of toothed gearing alonethere is and must be between the teeth a certain amount of looseness,which constitutesbacklash, the backlash being increased as the number ofgears are increased; but by interposing a friction device, as hereinprovided for, between the dier-driving shaft and the bobbindrivingshaft, both of the said shafts start and stop together, yet the frictionbetween the friction-plates is not so great but that one of the platesslips on or with relation to the other as the relative speed of the twoshafts a3 b5 is ,gradually changed by shifting the belt upon thecone-pulleys.

I claim- The flier-driving shaft and bobbin-driving shaft of aroving-machine, combined with a friction device and with means toautomatically actuate the different portions of the said friction devicefrom the said shafts, whereby vthe rotation ofthe said shafts is stoppedand started at the same instant of time, thus avoiding backlash.

In testimony whereofl have signed my name to this specification in thepresence of two subscribing witnesses.

ALGNZO E. RHOADES.

Witnesses:

E. D. BANCROFT, H. LAWRENCE.

